2551261133 has 8 divisors (see below), whose sum is σ = 2602463640. Its totient is φ = 2500361280.

The previous prime is 2551261127. The next prime is 2551261151. The reversal of 2551261133 is 3311621552.

It can be written as a sum of positive squares in 4 ways, for example, as 33028009 + 2518233124 = 5747^2 + 50182^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2551261133 - 2¹⁰ = 2551260109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2551261096 and 2551261105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551261103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58598 + ... + 92391.

It is an arithmetic number, because the mean of its divisors is an integer number (325307955).

Almost surely, 2^2551261133 is an apocalyptic number.

It is an amenable number.

2551261133 is a deficient number, since it is larger than the sum of its proper divisors (51202507).

2551261133 is a wasteful number, since it uses less digits than its factorization.

2551261133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151327.

The product of its digits is 5400, while the sum is 29.

The square root of 2551261133 is about 50510.0102256968. The cubic root of 2551261133 is about 1366.4223939852.

Adding to 2551261133 its reverse (3311621552), we get a palindrome (5862882685).

The spelling of 2551261133 in words is "two billion, five hundred fifty-one million, two hundred sixty-one thousand, one hundred thirty-three".